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Upgrading a wastewater treatment plant

Martin Paquet, P. Eng.

Engineer Technical Service
Quebec | Northern Quebec | Saguenay-Lac-Saint-Jean | Abitibi-Témiscamingue

mm diameter

The Context

An HDPE solution for a large-diameter pipe under low pressure

The construction of a new technical building to house the new UV disinfection equipment and related services, the installation of underground bypass and transfer lines, as well as various modifications to existing infrastructure. The underground pipes will convey wastewater while meeting critical requirements, including lifespan, a low-pressure application, ease and speed of installation and corrosion resistance of the pipes to wastewater.

The Solution

A new bypass line for the secondary treatment system, 475 meters long (1558.4 ft), was installed. This 1500 mm (59 in) diameter pipe has seven elbows and two access chimneys. Two transfer lines, 2400 mm (94.4 in) in diameter and 15 m (49.2 ft) long were set to receive disinfected water and direct it to the outfall chamber.

A major project requiring on-site welding by Soleno Service

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Images and Quotes

For Les Entreprises Jallex, this was the first major collaboration with Soleno Service. The client's requirements in terms of safety and working methodology led us to make several adjustments which required considerable flexibility in the execution of the work.
- Jonathan Lemay, President of Les Entreprises Jallex

In this project, turnaround times, cold temperatures and site conditions have led to technical, administrative and organizational challenges that have all moved us forward. We were able to adapt to the conditions and have performed the work on time.
- Jonathan Lemay, President of Les Entreprises Jallex

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